Thermophysical Properties of a Fe‐Cr‐Mo Alloy in the Solid and Liquid Phase

Wunderlich, R.; Fecht, Hans‐Jörg; Egry, Iván; Etay, J.; Battezzati, Livio; Ricci, E.; Matsushita, Taishi; Seetharaman, Seshadri

doi:10.1002/srin.201100156

Cited by 7 publications

(4 citation statements)

References 36 publications

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“…With incandescence at high temperatures sample self-illumination can be a first approach and has previously been employed by other groups using aerodynamic levitation techniques. 16,34,41,42 In order to make measurements over the extensive temperature ranges described here, shadow-cast imaging, like used in the past for EML work, 43 of the levitating drop is essential. Here, the camera and lens configuration do not have to be adapted for different experimental conditions.…”

Section: Imaging and Image Analysismentioning

confidence: 99%

Aerodynamic levitator furnace for measuring thermophysical properties of refractory liquids

Langstaff¹,

Gunn²,

Greaves³

et al. 2013

Review of Scientific Instruments

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The development of novel contactless aerodynamic laser heated levitation techniques is reported that enable thermophysical properties of refractory liquids to be measured in situ in the solid, liquid, and supercooled liquid state and demonstrated here for alumina. Starting with polished crystalline ruby spheres, we show how, by accurately measuring the changing radius, the known density in the solid state can be reproduced from room temperature to the melting point at 2323 K. Once molten, by coupling the floating liquid drop to acoustic oscillations via the levitating gas, the mechanical resonance and damping of the liquid can be measured precisely with high-speed high-resolution shadow cast imaging. The resonance frequency relates to the surface tension, the decay constant to the viscosity, and the ellipsoidal size and shape of the levitating drop to the density. This unique instrumentation enables these related thermophysical properties to be recorded in situ over the entire liquid and supercooled range of alumina, from the boiling point at 3240 K, until spontaneous crystallization occurs around 1860 K, almost 500 below the melting point. We believe that the utility that this unique instrumentation provides will be applicable to studying these important properties in many other high temperature liquids.

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Section: Imaging and Image Analysismentioning

confidence: 99%

Aerodynamic levitator furnace for measuring thermophysical properties of refractory liquids

Langstaff¹,

Gunn²,

Greaves³

et al. 2013

Review of Scientific Instruments

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“…The thermophysical properties of several Ni-based superalloys [1] have been determined within the ground-based experiments program of the ESA MAP ThermoProp project. The project is concerned with the measurement of the thermophysical properties of industrial alloys in the liquid phase and combines long and short duration microgravity measurements with groundbased experiments [2,3].…”

Section: Introductionmentioning

confidence: 99%

Thermophysical properties of some Ni-based superalloys in the liquid state relevant for solidification processing

et al. 2015

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The thermophysical properties, e.g., melting range, specific heat, solid fraction, density, and surface tension of four industrial Ni-based alloys, namely MC-2, CMSX-10, TMS-75, and LEK-94, have been determined within the ground-based experiments program of the ESA MAP ThermoProp project. The tests were performed under reducing atmosphere in order to lower the oxygen contamination. The results obtained have been compared with the corresponding data of Ni-based alloys available in literature. The new experimental data have been analyzed as a function of both temperature and alloy composition and interpreted by means of different thermodynamic models.

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“…In several parabolic flight campaigns, the surface tension, viscosity, and density of a variety of steel grades were investigated, [49,62,63] together with groundbased measurements for thermophysical properties in the solid-state. [63] Stainless steels based on the Fe-Cr-Ni alloy system are common materials; however, these alloys are very interesting for the study of competing nucleation kinetics of different phases. These steel alloys show primary metastable ferritic solidification, rapidly followed by a transformation to the stable austenite.…”

Section: Alloy Selectionmentioning

confidence: 99%

Investigating Thermophysical Properties Under Microgravity: A Review

Mohr

Fecht

2020

Adv Eng Mater

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The advancement of metallic alloys is generally driven by alloy development, but furthermore requires the development of suitable production and processing routines. Almost all metallic products are formed through the solidification processing from the liquid phase. Although the solid-state is not influenced by gravitational effects, the processing of liquids is strongly impacted by earth's gravity-this influences interface phenomena, momentum, heat, and mass transport and, consequently, the solidification events. Experiments on liquid metallic alloys in microgravity avoid these influences and therefore allow benchmark experiments. This allows, for example, to obtain reliable thermophysical properties, improve the understanding of nucleation, phase selection, crystal growth, and other basic features of the liquid phase and the liquid-solid transition. The basic methodology, as well as a number of recent results obtained in the long-duration microgravity environment on board the international space station, are presented and discussed.

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Thermophysical Properties of a Fe‐Cr‐Mo Alloy in the Solid and Liquid Phase

Cited by 7 publications

References 36 publications

Aerodynamic levitator furnace for measuring thermophysical properties of refractory liquids

Aerodynamic levitator furnace for measuring thermophysical properties of refractory liquids

Thermophysical properties of some Ni-based superalloys in the liquid state relevant for solidification processing

Investigating Thermophysical Properties Under Microgravity: A Review

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